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WAEC Further Mathematics 2008 Question 36

Question 36

Probability

A pack of cards has 6 of them with a ⊗ written on them, 5 with ⊕ and 9 with ∅. What is probability that single card drawn at random is not a ⊕?

  1. A.1/4
  2. B.2/5
  3. C.2/3
  4. D.3/4
Show the answer and explanation

Answer: D (3/4)

Explanation

There are 20 cards and 5 have ⊕, so 15 do not. The probability is 15/20 = 3/4.